Shower valve



FIG.1 is a first perspective view of a shower valve showing my new design;

FIG.2 is a second perspective view thereof;

FIG.3 is a front view thereof;

FIG.4 is a back view thereof;

FIG.5 is a left side view thereof

FIG.6 is a right side view thereof;

FIG.7 is a top view thereof; and,

FIG.8 is a bottom view thereof.

The broken lines shown in the drawings depict portions of the shower valve in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for a shower valve, as shown and described. 